refactor: cleanup configs, unify session handling

- flake.nix:
  - Close braces formatting for `allowUnfree`
  - Remove per-user `custom.sessionType` modules
- home-manager:
  - home.nix: remove unused apps (bambu-studio, hydralauncher, keymapp, etc.)
    - drop librespot service
    - add waydroid
    - fix kitty font_family spacing
  - gnome: add gnome-tweaks and appindicator extension
  - vim: update nixvim module import path
  - zsh: drop sessionType option and conditional aliases
    - hardcode wl-copy/wl-paste as pbcopy/pbpaste
- hyprland: style fixes in braces, spacing, keybind comments
- hosts/Nixstation:
  - remove gnome-session and redundant tweaks
  - remove env vars NIXOS_HOST / NIXOS_DE
  - enable virtualization (libvirtd, spiceUSBRedirection, vmware.host=false)
- hardware-configuration: reformat fileSystems definitions
- common/nvidia:
  - remove explicit kernelPackages override
  - ensure xserver.enable=true and GNOME/GDM config intact
- users/thiago: reorder and regroup extraGroups list

home-manager/zsh.nix

@@ -3,16 +3,7 @@
 , pkgs
 , ...
 }:
-let
-  isWayland = config.custom.sessionType == "wayland";
-in
 {
-  options.custom.sessionType = lib.mkOption {
-    type = lib.types.str;
-    default = "x11";
-    description = "The X session type: 'wayland' or 'x11'";
-  };
-
   config = {
     home.file."scripts/lsgpu.sh" = {
       source = ./scripts/lsgpu.sh;
@@ -28,25 +19,15 @@ in
         export GPG_TTY=$(tty)
       '';
 
-      shellAliases = lib.mkMerge [
-        {
-          "vi" = "nvim";
-          "vim" = "nvim";
-          "ll" = "ls -l";
-          "lsgpu" = "$HOME/scripts/lsgpu.sh";
-          "gedit" = "gnome-text-editor";
-        }
-
-        (lib.mkIf isWayland {
-          "pbcopy" = "wl-copy";
-          "pbpaste" = "wl-paste";
-        })
-
-        (lib.mkIf (!isWayland) {
-          "pbcopy" = "xclip -selection clipboard -i";
-          "pbpaste" = "xclip -selection clipboard -o";
-        })
-      ];
+      shellAliases = {
+        "vi" = "nvim";
+        "vim" = "nvim";
+        "ll" = "ls -l";
+        "lsgpu" = "$HOME/scripts/lsgpu.sh";
+        "gedit" = "gnome-text-editor";
+        "pbcopy" = "wl-copy";
+        "pbpaste" = "wl-paste";
+      };
 
       oh-my-zsh = {
         enable = true;
@@ -57,7 +38,5 @@ in
         ];
       };
     };
-
-    home.packages = with pkgs; [ xclip ];
   };
 }